A former Twitter executive, Peiter 'Mudge' Zatko, has come forward as a whistleblower, alleging that Twitter has major security problems that pose a threat to its users' personal information, company shareholders, national security, and democracy. Zatko claims that Twitter's leadership has misled its own board and government regulators about its security vulnerabilities. He also alleges that some of the company's senior-most executives have been trying to cover up Twitter's serious vulnerabilities. Twitter has responded, stating that security and privacy are longtime priorities for the company and that Zatko's allegations are false and opportunistic.